CN103625956B - Paper reading device and paperboard decision method - Google Patents

Paper reading device and paperboard decision method Download PDF

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Publication number
CN103625956B
CN103625956B CN201310370402.6A CN201310370402A CN103625956B CN 103625956 B CN103625956 B CN 103625956B CN 201310370402 A CN201310370402 A CN 201310370402A CN 103625956 B CN103625956 B CN 103625956B
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China
Prior art keywords
paper
frequency band
paperboard
composition
signal
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CN201310370402.6A
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CN103625956A (en
Inventor
森川修
森川修一
本江雅信
安川亮
安川亮一
海贵之
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PFU Ltd
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PFU Ltd
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/063—Rollers or like rotary separators separating from the bottom of pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0653—Rollers or like rotary separators for separating substantially vertically stacked articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5246—Driven retainers, i.e. the motion thereof being provided by a dedicated drive
    • B65H3/5276—Driven retainers, i.e. the motion thereof being provided by a dedicated drive the retainers positioned over articles separated from the bottom of the pile
    • B65H3/5284—Retainers of the roller type, e.g. rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/12—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation
    • B65H7/125—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation sensing the double feed or separation without contacting the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/40—Details of frames, housings or mountings of the whole handling apparatus
    • B65H2402/44—Housings
    • B65H2402/441—Housings movable for facilitating access to area inside the housing, e.g. pivoting or sliding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/40—Details of frames, housings or mountings of the whole handling apparatus
    • B65H2402/46—Table apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/60—Other elements in face contact with handled material
    • B65H2404/61—Longitudinally-extending strips, tubes, plates, or wires
    • B65H2404/611—Longitudinally-extending strips, tubes, plates, or wires arranged to form a channel
    • B65H2404/6111—Longitudinally-extending strips, tubes, plates, or wires arranged to form a channel and shaped for curvilinear transport path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/40—Identification
    • B65H2511/416—Identification of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B65H2511/524—Multiple articles, e.g. double feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B65H2511/528—Jam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/51—Sequence of process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/82—Sound; Noise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/23—Recording or storing data
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/24—Calculating methods; Mathematic models
    • B65H2557/242—Calculating methods; Mathematic models involving a particular data profile or curve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/30—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof
    • B65H2557/31—Control systems architecture or components, e.g. electronic or pneumatic modules; Details thereof for converting, e.g. A/D converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1313—Edges trailing edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1914—Cards, e.g. telephone, credit and identity cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/39—Scanning

Abstract

The present invention relates to a kind of paper reading device and paperboard decision method.The present invention provides a kind of paper transport device that can determine whether there occurs with low cost paperboard based on the sound that paper produces in conveying.Paper transport device (100) has: ultrasonic signal output unit (114), and it is located at the vicinity of carrying path of paper, detects the ultrasonic wave by paper output ultrasonic wave signal；Fold and send detection unit (155), its composition based on the first frequency band in ultrasonic signal, it is determined that whether paper there occurs folded sending；Sound paper jam determination unit (153), its composition based on the second frequency band less than the first frequency band in ultrasonic signal, it is determined whether there occurs paperboard.

Description

Paper reading device and paperboard decision method
Technical field
The present invention relates to a kind of paper reading device and paperboard decision method, particularly one is carrying based on paper The sound of middle generation determines whether to there occurs the paper reading device of paperboard and paperboard decision method.
Background technology
In the paper transport device such as image read-out, image copying machine, when paper moves on carrying path, have There is the situation of paperboard (paper paperboard).Usually, paper transport device has a following function: by carrying paper from starting Open and the most whether can determine whether to there occurs card by the assigned position in paper sheet delivery to carrying path Paper, the action of arresting stop when paperboard occurs.
On the other hand, owing to when paperboard occurs, carrying path producing big sound, thus, paper transport device Be possibly based on carrying path produce sound determine whether to there occurs paperboard, from without waiting for through the stipulated time with regard to energy Enough detect the generation of paperboard.
The paper jam detection apparatus of a kind of duplicator is disclosed, and the sound that carrying path produces is converted into the signal of telecommunication by it, Exceed in the case of time of reference level exceeded a reference value, it is determined that paperboard occurs (with reference to patent document 1).
[prior art literature]
[patent document]
[patent document 1] JP 57-169767 publication
Summary of the invention
[invention to solve the technical problem that]
In order to determine whether to there occurs paperboard by sound, need to collect the special Mike of the sound produced on carrying path Wind, has the problem that the cost of paper transport device increases.
It is an object of the invention to, it is provided that a kind of sound that can produce in conveying based on paper with low cost, it is determined that Whether there occurs paper reading device and the paperboard decision method of paperboard.
[solving the technological means of problem]
Paper reading device involved by one aspect of the present invention is the paper reading device reading image information from paper, It has: ultrasound transmitter device, and it is located at the vicinity of carrying path of paper；Ultrasonic receiver, it is logical that it clips conveying Road is relatively configured with ultrasound transmitter device, and output ultrasonic wave signal；Wave filter portion, it divides from ultrasonic signal From composition and the composition of the second frequency band of the first frequency band, the composition of the first frequency band is by being sent by ultrasound transmitter device and passing through The ultrasonic wave of paper produces, and the composition of the second frequency band is produced by conveying sound during paper sheet delivery, less than the first frequency band and be The zone of audibility；Fold and send detection unit, its composition based on the first frequency band, it is determined that whether paper there occurs folded sending；Sound paperboard is sentenced Determine portion, its composition based on the second frequency band, it is determined whether there occurs paperboard.
Also, the paperboard decision method involved by one aspect of the present invention is the paper reading dress reading image information from paper The paperboard decision method put, it comprises: ultrasonic signal obtaining step, i.e. obtains the composition of the first frequency band from wave filter portion And second composition of frequency band, the composition of the first frequency band is by being sent by ultrasound transmitter device and being produced by the ultrasonic wave of paper Raw, the composition of the second frequency band is produced by conveying sound during paper sheet delivery, less than the first frequency band and be the zone of audibility, and wave filter Portion separates composition and the composition of the second frequency band of the first frequency band from the ultrasonic signal that ultrasonic receiver exports, ultrasonic Ripple receiver clips the carrying path of paper and is relatively configured with the ultrasound transmitter device being located near carrying path, and defeated Go out ultrasonic signal；Fold and send determination step, i.e. based on the first frequency band composition, it is determined that whether paper there occurs folded sending；Sound Sound paperboard determination step, i.e. based on the second frequency band composition, it is determined whether there occurs paperboard.
[effect of invention]
According to the present invention, owing to using for judging whether paper occurs the folded ultrasonic signal sent to determine whether there occurs Paperboard, therefore, it is possible to determine whether to there occurs paperboard based on the sound that paper produces in conveying with low cost.
Accompanying drawing explanation
Fig. 1 is the stereogram illustrating paper transport device 100.
Fig. 2 is the figure for illustrating the carrying path within paper transport device 100.
Fig. 3 is the block diagram of the schematic configuration illustrating paper transport device 100.
Fig. 4 A is the figure for illustrating the characteristic of ultrasonic signal.
Fig. 4 B is the figure for illustrating the characteristic of ultrasonic signal.
Fig. 4 C is the figure for illustrating the characteristic of ultrasonic signal.
Fig. 5 is the flow chart of the example of the action of the whole process illustrating paper transport device 100.
Fig. 6 is the flow chart of the example of the action illustrating that unusual determination processes.
Fig. 7 is the flow chart of the example of the action illustrating sound paperboard determination processing.
Fig. 8 A is the diagram of the example illustrating the second ultrasonic signal.
Fig. 8 B is the diagram of the example illustrating the signal after taking absolute value the second ultrasonic signal.
Fig. 8 C is the diagram of the example of the profile illustrating the signal after taking absolute value the second ultrasonic signal. Fig. 8 D is the diagram of the example illustrating count value.
Fig. 9 A is the figure illustrated for the determination processing that paperboard occurs.
Fig. 9 B is the figure illustrated for the determination processing that paperboard occurs.
Figure 10 A is the figure for illustrating the situation of conveying card.
Figure 10 B is the figure for illustrating the situation of conveying card.
Figure 11 is the flow chart of the example of the action illustrating position paperboard determination processing.
Figure 12 is the flow chart of the example illustrating the folded action sending determination processing.
Figure 13 is the figure for illustrating the characteristic of the first ultrasonic signal.
Figure 14 is the flow chart of the example of the action illustrating that unusual determination processes.
Figure 15 is the block diagram of the schematic configuration illustrating another paper transport device 200.
Figure 16 is the block diagram of the schematic configuration illustrating yet another paper transport device 300.
[symbol description]
100 paper transport devices
110 first note detection portions
111 feeding-in rolls
112 damping rolls
113 second note detection portions
114 ultrasonic sensors
117 the 3rd note detection portions
118 image pickup parts
141 wave filter portions
142a the first wave filter
142b the second wave filter
143a the first enlarging section
143b the second enlarging section
145 drive divisions
146 interface portion
147 storage parts
150 central processing departments
151 control portions
152 image production parts
153 sound paper jam determination unit
154 position paper jam determination unit
155 folded send detection unit
256 first switching parts
356 second switching parts
Detailed description of the invention
Hereinafter, referring to the drawings the paper transport device involved by one aspect of the present invention and paperboard decision method are carried out Explanation.It is however noted that, the scope of the technology of the present invention is not limited to these embodiments, also includes that right is wanted Ask the invention described in book and equivalent invention thereof.
Fig. 1 is the stereogram being shown as the paper transport device 100 that image reading apparatus is constituted.
Paper transport device 100 include lower frame 101, upper side frame body 102, paper-table 103, discharge platform 105 and Operation button 106 etc..
Lower frame 101 and upper side frame body 102 are formed by resin material.Upper side frame body 102 is configured in covering paper The position of the upper surface of conveying device 100, for make when paper paperboard or when paper transport device 100 is internal clean time etc. Can switch, be engaged to lower frame 101 by hinge.
Paper-table 103 is engaged to lower frame 101 with can placing paper.Paper-table 103 is provided with in the conveying side with paper I.e. moveable side guiding piece 104a and 104b relative on the left and right directions of the conveying direction of paper to orthogonal direction. Side guiding piece 104a and 104b can be positioned by the width of engaging paper thus limit the width of paper.
Discharge platform 105 and be engaged to lower frame 101 by hinge, can rotate up in the side shown in arrow A1.? Under the state opened as Fig. 1, the paper being discharged can be kept.
Operation button 106 is configured in the surface of side frame body 102, when being pressed, generates and output function detection letter Number.
Fig. 2 is the figure for illustrating the carrying path within paper transport device 100.
Carrying path within paper transport device 100 has: the first note detection portion 110, feeding-in roll 111, damping roll 112, the second note detection portion 113, ultrasound transmitter device 114a, ultrasonic receiver 114b, the first conveying roller 115, First driven voller the 116, the 3rd note detection portion the 117, first image pickup part 118a, the second image pickup part 118b, the second conveying Roller 119 and the second driven voller 120 etc..
The upper surface of lower frame 101 is formed with lower side guides 107a of the carrying path of paper, upper side frame body 102 Lower surface is formed with upper side guides 107b of the carrying path of paper.In fig. 2, arrow A2 represents the conveying side of paper To.Below, upstream refers to the upstream of the conveying direction A2 of paper, and downstream refers to the downstream of the conveying direction A2 of paper.
First note detection portion 110 has the contact detection of the upstream side being configured in feeding-in roll 111 and damping roll 112 Sensor, whether detection paper-table 103 has placement paper.First note detection portion 110 generate and output signal value according to Have in paper-table 103 and place the state of paper and there is no the state placed and the first note detection signal changed.
Second note detection portion 113 has and is configured in feeding-in roll 111 and the downstream of damping roll 112 and defeated first Send the contact-detection sensor of the upstream side of roller 115 and the first driven voller 116, detect whether this position exists paper. The state that second note detection portion 113 generates and output signal value exists according to this position paper and not existence and change The second note detection signal.
Ultrasound transmitter device 114a and ultrasonic receiver 114b are the examples of ultrasonic signal output unit, clip conveying Path is relatively configured in the vicinity of the carrying path of paper.Ultrasound transmitter device 114a sends ultrasonic in the moment of regulation Ripple.It addition, ultrasound transmitter device 114a regulation moment (vacating the interval of regulation) send ultrasonic wave reason be by Affected by the back wave of paper reflection in order to not by ultrasound transmitter device 114a.On the other hand, ultrasonic wave receives Device 114b detection sent and by the ultrasonic wave of paper by ultrasound transmitter device 114a, generate and export as with detect The ultrasonic signal of the corresponding signal of telecommunication of ultrasonic wave.Below, some place is by ultrasound transmitter device 114a and ultrasonic wave Receiver 114b is referred to as ultrasonic sensor 114.
3rd note detection portion 117 has and is configured in the first conveying roller 115 and downstream of the first driven voller 116, with And first contact-detection sensor of upstream side of image pickup part 118a and the second image pickup part 118b, detect whether this position deposits At paper.3rd note detection portion 117 generate and output signal value according to this position with the presence of paper state with do not exist State and the 3rd note detection signal that changes.
CIS (Contact Image Sensor: the contact figure of the magnification optical system types such as the first image pickup part 118a has As sensor), this CIS is included in CMOS (the Complementary Metal linearly arranged on main scanning direction Oxide Semiconductor: complementary metal oxide semiconductors (CMOS)) imaging apparatus.This CIS reads the back side of paper, Generate and export analog picture signal.Similarly, the second image pickup part 118b such as has at the CIS of magnification optical system type, should CIS is included in the imaging apparatus of the CMOS linearly arranged on main scanning direction.This CIS reads the surface of paper, raw Become and export analog picture signal.Alternatively, it is also possible to only configure the first image pickup part 118a and the second image pickup part 118b its In one, only read the one side of paper.Also, also be able to replace CIS, utilize and include CCD (Charge Coupled Device: charge coupled device) the image sensor reducing optical system type of imaging apparatus.Below, some ground First image pickup part 118a and the second image pickup part 118b is referred to as image pickup part 118 by side.
The paper being placed on paper-table 103 is rotated by the direction of the arrow A3 of Fig. 2 by feeding-in roll 111, guides in downside Carried towards sheet transport direction A2 between part 107a and upper side guides 107b.When paper sheet delivery, damping roll 112 are rotated by the direction of the arrow A4 of Fig. 2.By feeding-in roll 111 and the work of damping roll 112, in paper-table In the case of being placed with multiple paper on 103, carry out action make to be placed in the paper of paper-table 103 only with feeding-in roll The paper of 111 contacts is separated, and limits the conveying (preventing folded sending) of the paper in addition to the paper separated.Feeding-in roll 111 and damping roll 112 as the separation unit function of paper.
Paper is guided by lower side guides 107a and upper side guides 107b, and be fed to the first conveying roller 115 with Between first driven voller 116.Rotated by the direction of the arrow A5 of Fig. 2 by the first conveying roller 115, paper is sent into To between the first image pickup part 118a and the second image pickup part 118b.The side of the arrow A6 of Fig. 2 is pressed by the second conveying roller 119 To rotation, it is discharged to the paper read by image pickup part 118 discharge on platform 105.
Fig. 3 is the block diagram of the schematic configuration illustrating paper transport device 100.
Paper transport device 100, in addition to above-mentioned composition, also has: the first image A/D converter section 140a, the second image A/D converter section 140b, wave filter portion 141, drive division 145, interface portion 146, storage part 147 and central processing department 150 etc..
The picture signal of the simulation from the first image pickup part 118a output is carried out modulus and turns by the first image A/D converter section 140a Change and generate the view data of numeral, output to central processing department 150.Similarly, the second image A/D converter section 140b The picture signal of the simulation from the second image pickup part 118b output is carried out analog-to-digital conversion and generates the view data of numeral, output To central processing department 150.Hereinafter, it is referred to as reading image by the view data of these numerals.
Wave filter portion 141 has: the first wave filter 142a, the second wave filter 142b, the first enlarging section 143a, second put Big portion 143b, an A/D converter section 144a and the 2nd A/D converter section 144b etc..
The ultrasonic signal of the first wave filter 142a simulation to exporting from ultrasonic sensor 114, application makes to preset The bandpass filter that passes through of the signal of the first frequency band, and export the first enlarging section 143a.First frequency band is and ultrasonic wave The paper passed through is that the situation of is compared, and in the case of the paper passed through at ultrasonic wave is multiple, signal value is greatly attenuated Frequency band, can be such as more than 20kHz and 300kHz bands below.First enlarging section 143a makes from the first wave filter The signal of 142a output is amplified and output to an A/D converter section 144a.Oneth A/D converter section 144a will be put from first The signal of the simulation of big portion 143a output is converted into data signal, output to central processing department 150.Below, some is local The signal of the composition of the first frequency band from an A/D converter section 144a output is referred to as the first ultrasonic signal.
The ultrasonic signal of the second wave filter 142b simulation to exporting from ultrasonic sensor 114, application makes less than in advance The bandpass filter that the signal of the second frequency band of the first frequency band set passes through, and export the second enlarging section 143b.Second Frequency band is the zone of audibility, can be such as more than 20Hz and the frequency band less than 20kHz.Second enlarging section 143b makes from second The signal of wave filter 142b output is amplified and output to the 2nd A/D converter section 144b.2nd A/D converter section 144b will be from The signal of the simulation of the second enlarging section 143b output is converted into data signal, output to central processing department 150.Below, have A little local signals by the composition of the second frequency band from the 2nd A/D converter section 144b output are referred to as the second ultrasonic signal.
Drive division 145 comprises one or more motor, by the control signal from central processing department 150, makes paper feeding Roller 111, damping roll the 112, first conveying roller 115 and the second conveying roller 119 rotate and carry out the conveying action of paper.
Interface portion 146 has the interface circuit of the universal serial bus according to such as USB etc., with not shown information processor (such as, personal computer, personal digital assistant device etc.) electrically connects and receives and dispatches reading image and various information.Also, also Flash memory etc. can be connected to interface portion 146 and preserve reading image.
Storage part 147 has: RAM (Random Access Memory: random access memory), ROM (Read Only Memory: read-only storage) etc. storage device；The fixed magnetic-disk drives such as hard disk；Or floppy disk, CD etc. can carry Storage device etc..Also, storage part 147 stores the computer journey of the various process for paper transport device 100 Sequence, database, form etc..Computer program can also be from such as CD-ROM (compact disk read only Memory: compact disc read-only memory), DVD-ROM (digital versatile disk read only memory: number Word video compact disk read-only storage) etc. embodied on computer readable can portable storage medium, use known installation procedure etc. It is installed to storage part 147.Further, storage part 147 stores reading image.
Central processing department 150 includes CPU (Central Processing Unit: CPU), based on depositing in advance The program at storage part 147 of storing up carries out action.It addition, central processing department 150 can also be by DSP (digital signal Processor: digital signal processor), LSI (large scale integration: large scale integrated circuit), ASIC (Application Specific Integrated Circuit: special IC), FPGA (Field- Programming Gate Array: field programmable gate array) etc. constitute.
Central processing department 150 and operation the 110, second note detection portion 113 of button the 106, first note detection portion, ultrasonic Wave sensor the 114, the 3rd note detection portion the 117, first image pickup part 118a, the second image pickup part 118b, the first image A/D Converter section 140a, the second image A/D converter section 140b, wave filter portion 141, drive division 145, interface portion 146 and Storage part 147 connects, and controls these each portions.
Central processing department 150 is driven the paper reading control etc. driving control, image pickup part 118 in portion 145, obtains Read image.Also, central processing department 150 has control portion 151, image production part 152, sound paper jam determination unit 153, position paper jam determination unit 154 and folded send detection unit 155 etc..These each portions are by being operated on a processor The functional module that is mounted of software.It addition, these each portions can also be by the most independent integrated circuit, micro-process Device, firmware etc. are constituted.
Fig. 4 A, Fig. 4 B and Fig. 4 C are the figures for illustrating the characteristic of ultrasonic signal.
Fig. 4 A, Fig. 4 B and the horizontal axis representing time of Fig. 4 C, the longitudinal axis represents the signal value of ultrasonic signal.Fig. 4 A shows Figure 40 0 represents the example of the ultrasonic signal of the simulation from ultrasonic sensor 114 output.The ultrasonic wave letter of diagram 400 Number there is radio-frequency component 401 and more than 20Hz and the low-frequency component less than 20kHz 402 of more than 20kHz.Radio-frequency component 401 is that the ultrasonic wave sent by ultrasound transmitter device 114a produces, and low-frequency component 402 is by conveying during paper sheet delivery Sound produces.
The diagram 410 of Fig. 4 B represents, for the ultrasonic signal of diagram 400, the first enlarging section 143a amplifies the first filter Signal after the signal of the first frequency band of ripple device 142a output.As shown in Figure 4 B, by the first wave filter 142a, 20kHz Above radio-frequency component 401, the composition of the ultrasonic wave i.e. sent by ultrasound transmitter device 114a is extracted.
The diagram 420 of Fig. 4 C represents, for the ultrasonic signal of diagram 400, the second enlarging section 143b amplifies the second filter Signal after the signal of the second frequency band of ripple device 142b output.As shown in Figure 4 C, by the second wave filter 142b, 20Hz Low-frequency component 402 above and less than 20kHz, the composition i.e. produced by conveying sound during paper sheet delivery is extracted.
Fig. 5 is the flow chart of the example of the action of the whole process illustrating paper transport device 100.
Hereinafter, with reference to the flow chart shown in Fig. 5, the example of the action of whole process of paper transport device 100 is carried out Explanation.It addition, the flow process of the action of following description, based on being stored in advance in the program of storage part 147, in mainly passing through Process portion, centre 150 cooperates with each key element of paper transport device 100 and performs.
Starting, central processing department 150 is the most standby, until pressing the operation button 106 by user, from operation button 106 receive till operation detection signal (step S101).
Then, central processing department 150 is based on the first note detection signal received from the first note detection portion 110, to paper Open whether platform 103 has placement paper to carry out judging (step S102).
In the case of paper-table 103 does not place paper, central processing department 150 returns process to step S101, and The most standby until again receiving operation detection signal from operation button 106.
On the other hand, in the case of having placement paper in paper-table 103, central processing department 150 drives drive division 145 Make feeding-in roll 111, damping roll the 112, first conveying roller 115 and the second conveying roller 119 rotate, carry paper (step S103)。
Then, whether control portion 151 is that ON judges (step S104) to there is abnormal marking.The abnormal mark of this generation Note is set to an off when the starting of paper transport device 100, when different by unusual determination described below processes judgement generation Chang Shi, then be set to ON.
In the case of occurring abnormal marking to be ON, control portion 151, as abnormality processing, stops drive division 145, makes paper The conveying opened stops, and by not shown loudspeaker, LED (Light Emitting Diode: light emitting diode) Deng, will there occurs that abnormal situation notifies to user, exception will occur, and mark is set to an off (step S105), terminates A series of step.
On the other hand, in the case of unusual determination mark is not ON, image production part 152 allows the first image pickup part 118a And second image pickup part 118b read the paper that carried, by the first image A/D converter section 140a and the second image A/D converter section 140b obtains and reads image (step S106).
Then, the image that reads got, by interface portion 146, is sent at not shown information by central processing department 150 Reason device (step S107).It addition, in the case of not being connected with information processor, central processing department 150 will obtain The reading image got is stored in storage part 147.
Then, central processing department 150 is based on the first note detection signal received from the first note detection portion 110, to paper Whether remain paper on platform 103 to carry out judging (step S108).
In the case of paper-table 103 remains paper, central processing department 150 makes process return to step S103, repeats Step S103～the process of S108.On the other hand, in the case of paper-table 103 does not remains paper, central processing department 150 terminate a series of process.
Fig. 6 is the flow chart of the example of the action illustrating that unusual determination processes.
The flow process of the action of following description is based on being stored in advance in storage part 147 program, main by central processing department 150 Cooperate with each key element of paper transport device 100 and perform.
Starting, sound paper jam determination unit 153 implements sound paperboard determination processing (step S201).Sound paper jam determination unit 153 in sound paperboard determination processing, determines whether to send out based on the second ultrasonic signal got from wave filter portion 141 Give birth to paperboard.Below, sound paper jam determination unit 153 is determined with based on the second ultrasonic signal and does not send out by some place Raw paperboard is referred to as sound paperboard.Details about sound paperboard determination processing will be described later.
Then, position paper jam determination unit 154 enforcing location paperboard determination processing (step S202).Position paper jam determination unit 154 in the paperboard determination processing of position, based on the second note detection signal got from the second note detection portion 113 with from The 3rd note detection signal that 3rd note detection portion 117 gets determines whether to there occurs paperboard.Below, some ground Position paper jam determination unit 154 is determined with does not sends out based on the second note detection signal and the 3rd note detection signal by side Raw paperboard is referred to as position paperboard.Details about position paperboard determination processing will be described later.
Then, folded detection unit 155 is sent to implement folded to send determination processing (step S203).Fold and send detection unit 155 to send judgement folded In process, the folded row that is sent into whether is occurred to sentence on paper based on the first ultrasonic signal got from wave filter portion 141 Fixed.Send the details of determination processing by described below about folded.
Then, whether control portion 151 there occurs in processing paper sheet delivery and extremely judges (step S204).About different Often the details of determination processing will be described later.
Control portion 151 is in the case of paper sheet delivery processes generation extremely, and exception will occur, and mark is set as ON (step S205), a series of step is terminated.On the other hand, in the case of paper sheet delivery process does not occur extremely, do not carry out Particularly process, terminate a series of step.It addition, the flow chart shown in Fig. 5 is held respectively by predetermined time interval OK.
Fig. 7 illustrates the flow chart of the example of the action of sound paperboard determination processing.
The flow process of the action shown in Fig. 7 performs in step S201 of the flow chart shown in Fig. 6.
Starting, sound paper jam determination unit 153 is turned by the second wave filter 142b, the second enlarging section 143b and the 2nd A/D Change portion 144b, obtain the second ultrasonic signal (step S301) from ultrasonic sensor 114.
Fig. 8 A illustrates the diagram of the example of the second ultrasonic signal.Diagram 800 shown in Fig. 8 A represents and turns from the 2nd A/D Second ultrasonic signal of the numeral that the portion 144b of changing receives.The horizontal axis representing time of diagram 800, the longitudinal axis represents and the second surpasses The signal value of acoustic signals.
Then, sound paper jam determination unit 153 generates the second ultrasonic signal received from the 2nd A/D converter section 144b Signal (step S302) after taking absolute value.
Fig. 8 B illustrate the second ultrasonic signal take absolute value after the diagram of example of signal.Diagram 810 shown in Fig. 8 B Represent diagram 800 the second ultrasonic signal take absolute value after signal.The horizontal axis representing time of diagram 810, longitudinal axis table Show the absolute value of the signal value of the second ultrasonic signal.
Then, sound paper jam determination unit 153 extracts the profile (step of the signal after taking absolute value the second ultrasonic signal S303).Sound paper jam determination unit 153 extracts envelope, as the signal after the second ultrasonic signal is taken absolute value outside Shape.
Fig. 8 C illustrates the diagram of the example of the profile of the signal after taking absolute value the second ultrasonic signal.Shown in Fig. 8 C Diagram 820 represents the envelope 821 of the signal after the taking absolute value the second ultrasonic signal of diagram 810.Diagram 820 Horizontal axis representing time, the longitudinal axis represents the absolute value of the signal value of the second ultrasonic signal.
Then, about the profile of the signal after taking absolute value the second ultrasonic signal, sound paper jam determination unit 153 calculates Count value, its more than first threshold Th1 in the case of be increased, be reduced in the case of less than first threshold Th1 (step S304).Sound paper jam determination unit 153 presses predetermined time interval (between the sampling of the such as second ultrasonic signal Every) respectively to the value of envelope 821 whether in the judgement carried out above of first threshold Th1, in the value of envelope 821 In the case of more than one threshold value Th1, increase count value, in the case of less than first threshold Th1, reduce count value.
Fig. 8 D is the example of the count value illustrating that the profile about the signal after taking absolute value the second ultrasonic signal calculates Diagram.Diagram 830 shown in Fig. 8 D represents the count value that the envelope 821 for diagram 820 calculates.Diagram The horizontal axis representing time of 820, the longitudinal axis represents count value.
Then, sound paper jam determination unit 153 to count value whether in Second Threshold Th2 judgement carried out above (step S305).If count value is at more than Second Threshold Th2, sound paper jam determination unit 153 judges that sound paperboard occurs (step S306), if count value is less than Second Threshold Th2, sound paper jam determination unit 153 judges that sound paperboard does not occur (step S307), a series of step is terminated.
In Fig. 8 C, envelope 821 reaches more than first threshold Th1 at moment T1, thereafter, is no longer below the first threshold Value Th1.Therefore, as in fig. 8d, count value increase from moment T1, moment T2 reach Second Threshold Th2 with On, sound paper jam determination unit 153 judges that sound paperboard occurs.
It addition, in step S303, sound paper jam determination unit 153 can not also obtain envelope, as ultrasonic to second Ripple signal take absolute value after the profile of signal, but the signal after the second ultrasonic signal is taken absolute value, obtain and take The signal (hereinafter referred to as peak hold signal) kept to peak value.Such as, central processing department 150 is only in certain holding The maximum of the signal after keeping the second ultrasonic signal to take absolute value in period, makes it thereafter by with certain attenuation rate Peak hold signal is obtained in decay.
Fig. 9 A and Fig. 9 B is for being obtained peak hold signal by the second ultrasonic signal and judging whether sound occurs The figure that the process of paperboard illustrates.
Diagram 900 shown in Fig. 9 A represents, the peak of the signal after taking absolute value about the second ultrasonic signal of diagram 810 Value keeps signal 901.The horizontal axis representing time of diagram 900, the longitudinal axis represents the absolute of the signal value of the second ultrasonic signal Value.
Diagram 910 shown in Fig. 9 B represents, the count value calculated for the peak hold signal 901 of diagram 900.Show The horizontal axis representing time of Figure 91 0, the longitudinal axis represents count value.Peak hold signal 901 reaches first threshold at moment T3 More than Th1, is brought down below first threshold Th1 at moment T4, again reaches more than first threshold Th1 at moment T5, its After, it is no longer below first threshold Th1.Therefore, as shown in Figure 9 B, count value increase from moment T3, from moment T4 Rise and reduce, again increase from moment T5, reach more than Second Threshold Th2 at moment T6, it is determined that sound paperboard is sent out Raw.
Figure 10 A and Figure 10 B is the figure for illustrating the situation of conveying card.
Figure 10 A represents that the card C that the rigidity of plastics etc. is high is just clamped between feeding-in roll 111 and damping roll 112 State.When the state from Figure 10 A carries card C further, then it is transitioned into the state of Figure 10 B.
Owing to upper side guides 107b and lower side guides 107a configure deviously, thus, when card C is with held State between feeding-in roll 111 and damping roll 112, also the most driven by the first conveying roller 115 and first If roller 116 clamping, deform due to its elasticity.Therefore, as shown in Figure 10 B, in the rear end of card C from feeding-in roll 111 when leaving with damping roll 112, owing to card C to return to original state from the state of deformation, sometimes a P with Lower side guides 107a contacts and sends impact sound.Card C contacts the impulsive sound produced with lower side guides 107a Sound, is collected by ultrasonic receiver 114b.
According to the above-mentioned impact sound collected, sound paper jam determination unit 153 likely falsely determines that paperboard occurs.Separately Outward, Figure 10 A and Figure 10 B is when conveying roller leaves, sends an example of the carrying path of impact sound, but also It is not limited to this.Also, outside plastic cards, as long as the thick paper that rigidity is high, be likely to as plastic cards Send impact sound.Further, though do not bend at carrying path, for plane in the case of, it is also possible to due to The jump of roller produces impact sound.
Figure 11 is the flow chart of the example of the action representing position paperboard determination processing.
The flow process of the action shown in Figure 11 performs in step S201 of the flow chart shown in Fig. 6.
Starting, position paper jam determination unit 154 is the most standby, until the top of paper detected by the second note detection portion 113 End (step S401).When the value of the second note detection signal from the second note detection portion 113 is from representing that paper does not exists The value of state when changing to the value representing the state existed, position paper jam determination unit 154 judges in the second note detection portion The position of 113, i.e. at feeding-in roll 111 and the downstream of damping roll 112 and the first conveying roller 115 and the first driven voller 116 Upstream, detects the top of paper.
Then, when the top of paper being detected by the second note detection portion 113, position paper jam determination unit 154 starts timing (step S402).
Then, to the 3rd note detection portion 117, whether position paper jam determination unit 154 detects that the top of paper judges (step S403).When the value of the 3rd note detection signal from the 3rd note detection portion 117 is from representing that paper is non-existent The value of state changes to represent the value of the state existed, and position paper jam determination unit 154 judges in the 3rd note detection portion 117 Position, i.e. in the first conveying roller 115 and the downstream of the first driven voller 116 and the upstream of image pickup part 118, paper detected The top opened.
When the top of paper being detected by the 3rd note detection portion 117, position paper jam determination unit 154 judges position paperboard Not there is (step S404), terminate a series of step.
On the other hand, when the 3rd note detection portion 117 is not detected by the top of paper, position paper jam determination unit 154 (step S405) is judged to whether have passed through the stipulated time (such as 1 second) from starting timing.If not through rule Fix time, then position paper jam determination unit 154 makes process return to step S403, and again, the 3rd note detection portion 117 is right Whether detect that the top of paper judges.On the other hand, in the case of have passed through the stipulated time, position paperboard is sentenced Determine portion 154 and judge that position paperboard occurs (step S406), terminate a series of step.It addition, at paper transport device In the case of 100 need not position paperboard determination processing, it is also possible to omitted.
It addition, when by the 3rd note detection signal from the 3rd note detection portion 117, the first conveying roller 115 with When the detected downstream of the first driven voller 116 is to the top of paper, in order to not send into next paper, central processing department 150 Temporarily controlling drive division 145 makes the rotation of feeding-in roll 111 and damping roll 112 stop.Thereafter, when by from second The second note detection signal in note detection portion 113, the detected downstream at feeding-in roll 111 with damping roll 112 arrives paper During rear end, central processing department 150 controls drive division 145 again makes feeding-in roll 111 and damping roll 112 rotate, conveying Next paper.Thus, central processing department 150 prevents multiple paper overlapping in carrying path.Therefore, position paperboard Detection unit 154 can also control drive division 145 at central processing department 150 makes feeding-in roll 111 and damping roll 112 rotate Moment start timing, within the stipulated time, be not detected by the situation on the top of paper in the 3rd note detection portion 117 Under, it is determined that position paperboard occurs.
Figure 12 is the flow chart of the example representing the folded action sending determination processing.
The flow process of the action shown in Figure 12 performs in step S203 of the flow chart shown in Fig. 6.
First, folded send detection unit 155 by the first wave filter 142a, the first enlarging section 143a and an A/D converter section 144a, obtains the first ultrasonic signal (step S501) from ultrasonic sensor 114.
Then, the folded signal value sending the detection unit 155 first ultrasonic signal to getting the most not up to is folded and is sent decision threshold Value carries out judging (step S502).
Figure 13 is the figure for illustrating the characteristic of the first ultrasonic signal.
In the diagram 1300 of Figure 13, solid line 1301 represents the first ultrasonic signal in the case of conveying single paper is opened Characteristic, dotted line 1302 represent there is paper folded send in the case of the characteristic of the first ultrasonic signal.Diagram 1300 Horizontal axis representing time, the longitudinal axis represents the signal value of the first ultrasonic signal.Owing to there is folded sending, in interval 1303, The signal value of the first ultrasonic signal of dotted line 1302 reduces.Therefore, it is possible to by the signal value of the first ultrasonic signal be No not up to folding send decision threshold ThA, judges whether paper occurs folded sending.
On the other hand, solid line 1304 represents the first surpassing in the case of only carrying a plastic card thicker than paper The characteristic of acoustic signals.Owing to, in the case of conveying card, the signal value of the first ultrasonic signal send decision threshold less than folded Value ThA, thus, folded send detection unit 155 to falsely determine that generation the folded of paper is given.Further, since it is sufficiently thick in conveying In the case of the thick paper that rigidity is high, also detect that there is the super of the characteristic identical with in the situation carrying plastic card Acoustic signals, thus, folded send detection unit 155 likely to falsely determine that generation the folded of paper is given.
Folded send detection unit 155 the first ultrasonic signal signal value less than folded send decision threshold in the case of, it is determined that occur The folded of paper is sent (step S503), and on the other hand, the signal value at the first ultrasonic signal send more than decision threshold folded In the case of, it is determined that do not occur the folded of paper to send (step S504), terminate a series of step.
Figure 14 is the flow chart of the example of the action representing that unusual determination processes.
The flow process of the action shown in Figure 14 performs in step S204 of the flow chart shown in Fig. 6.
Starting, control portion 151 judges being the most determined with position paperboard by position paper jam determination unit 154 (step S601).In the case of judging that by position paper jam determination unit 154 position paperboard occurs, control portion 151 judges card Paper occurs, and abnormal conditions occur (step S602), terminate a series of step.
In the case of not judging by position paper jam determination unit 154 that position paperboard occurs, control portion 151 to the most by Folded send detection unit 155 to be determined with folded sending to carry out judging (step S603).
Not by folded send detection unit 155 judge folded send generation in the case of, control portion 151 is to the most by sound paperboard Detection unit 153 is determined with sound paperboard to carry out judging (step S604).
In the case of not judging by sound paper jam determination unit 153 that sound paperboard occurs, control portion 151 judges paper Folded sending all does not occurs with paperboard, for normal condition (step S605), terminates a series of step.
On the other hand, in the case of judging that by sound paper jam determination unit 153 sound paperboard occurs, control portion 151 judges Paperboard occurs, and abnormal (step S606) occurs, terminates a series of step.
Also, in step S603, by folded send detection unit 155 judge folded send generation in the case of, control portion 151 is to being No it be determined with sound paperboard by sound paper jam determination unit 153 and carry out judging (step S607).
In the case of not judging by sound paper jam determination unit 153 that sound paperboard occurs, control portion 151 judges paper overlapped Send generation, abnormal (step S608) occurs, terminates a series of step.
On the other hand, in the case of be determined with the generation of sound paperboard by sound paper jam determination unit 153, control portion 151 is sentenced Fixed due to conveying card or thick paper, folded send detection unit 155 to judge folded to send generation, sound paper jam determination unit 153 judgement sound Sound paperboard occurs.In this case, control portion 151 is regarded as folded the sending of paper and does not all occur with paperboard and be judged to Normal condition (step S609), terminates a series of step.
It addition, in the flow chart shown in Figure 14, it is also possible to omit the presence or absence position card shown in step S601 and S602 The determination processing of paper, only from by the folded result of determination sent of the folded presence or absence sending detection unit 155 to carry out and by sound paper jam determination unit The result of determination of the presence or absence sound paperboard that 153 are carried out, determines whether that the folded of paper is sent generation and send out with or without paperboard simply Raw.Even if in this case, control portion 151 can determine that, in the case of conveying card or thick paper, paper Folded sending all does not occurs with paperboard.
As described above, paper transport device 100 is by according to such as Fig. 5, Fig. 6, Fig. 7, Figure 11, Figure 12 And the flow chart shown in Figure 14 carries out action, use by for determining whether ultrasonic sensor 114 institute that paper overlapped send The ultrasonic signal of output determines whether to there occurs paperboard.Therefore, paper transport device 100 can not be equipped with special Microphone, determines whether sound paperboard with low cost.
Even also, judge the folded situation sending generation based on the first ultrasonic signal, sentencing based on the second ultrasonic signal Determined sound that paper produces in conveying sufficiently large in the case of, paper transport device 100 is also regarded as carrying card Or thick paper.Therefore, paper transport device 100 can suppress to occur folded sending in the case of conveying card or thick paper Erroneous judgement and the erroneous judgement of paperboard.
Figure 15 is the block diagram of the schematic configuration showing another paper transport device 200.
The wave filter portion 241 of the paper transport device 200 shown in Figure 15, eliminates the paper transport device shown in Fig. 3 The second enlarging section 143b in each portion in the wave filter portion 141 of 100 and the 2nd A/D converter section 144b.Also, paper is defeated Send the central processing department 250 of device 200 in addition to each portion of the central processing department 150 shown in Fig. 3, also there is the first switching Portion 256.
The ultrasonic signal of the first wave filter 142a in wave filter portion 241 simulation to exporting from ultrasonic sensor 114, Application makes the bandpass filter that the signal of the first frequency band passes through, and exports the first enlarging section 143a.Second 142b pair, wave filter From the ultrasonic signal of the simulation of ultrasonic sensor 114 output, application makes the bandpass filtering that the signal of the second frequency band passes through Device, exports the first enlarging section 143a.First enlarging section 143a is by the first wave filter 142a and the second wave filter 142b In signal of any one output amplify, and export an A/D converter section 144a.
First switching part 256 sends the time of ultrasonic wave according to ultrasound transmitter device 114a, switches by the first enlarging section The signal that 143a amplifies.First switching part 256 carries out signal switching, sends the phase of ultrasonic wave in ultrasound transmitter device 114a Between, the first enlarging section 143a will be input to, in ultrasound transmitter device 114a not from the signal of the first wave filter 142a output Send the period of ultrasonic wave, the first enlarging section 143a will be input to from the signal of the second wave filter 142b output.
Wave filter portion 241 is during ultrasound transmitter device 114a sends ultrasonic wave, and output is based on ultrasound transmitter device 114a First ultrasonic signal of the composition of the ultrasonic wave sent, during ultrasound transmitter device 114a does not sends ultrasonic wave, output The second ultrasonic signal based on the composition by conveying sound during paper sheet delivery.Although sending in ultrasound transmitter device 114a The second ultrasonic signal is not generated during ultrasonic wave, but during during ultrasound transmitter device 114a sends ultrasonic wave and not sending Comparing the shortest, sound paper jam determination unit 153 can determine that without doubt and occurs with or without sound paperboard.
As described above, owing to paper transport device 200 is by sending ultrasonic according to ultrasound transmitter device 114a In the moment of ripple, switch and amplified signal by the first enlarging section 143a, it is possible to reduce enlarging section and the number of A/D converter section Amount, therefore, it is possible to determine whether sound paperboard with lower cost.
Figure 16 is the block diagram of the schematic configuration representing yet another paper transport device 300.
The wave filter portion 341 of the paper transport device 300 shown in Figure 16, eliminates the paper transport device shown in Fig. 3 The second wave filter 142b, the second enlarging section 143b and the 2nd A/D converter section in each portion in the wave filter portion 141 of 100 144b.Also, the central processing department 350 of paper transport device 300, except each portion of the central processing department 150 shown in Fig. 3 Outward, also there is the second switching part 356.
The first wave filter 142a in wave filter portion 341 is the bandpass filter that can be set by frequency band in real time, for from super The ultrasonic signal of the simulation of sonic sensor 114 output, makes the signal of the frequency band being set pass through, and output is put to first Big portion 143a.
Second switching part 356 sends the moment of ultrasonic wave according to ultrasound transmitter device 114a, switches the first wave filter 142a Allow the frequency band passed through.Second switching part 356, during ultrasound transmitter device 114a sends ultrasonic wave, sets the first filtering Device 142a is so that the first frequency band passes through, and during ultrasound transmitter device 114a does not sends ultrasonic wave, sets the first wave filter 142a is so that the second frequency band passes through.
Wave filter portion 341 is during ultrasound transmitter device 114a sends ultrasonic wave, and output is based on ultrasound transmitter device 114a First ultrasonic signal of the composition of the ultrasonic wave sent, during ultrasound transmitter device 114a does not sends ultrasonic wave, output The second ultrasonic signal based on the composition by conveying sound during paper sheet delivery.
As described above, paper transport device 200 according to ultrasound transmitter device 114a send ultrasonic wave time Between, switch the first wave filter 142a and allow the composition of the frequency band passed through.Accordingly, because paper transport device 200 can subtract Few wave filter, enlarging section and the quantity of A/D converter section, therefore, it is possible to determine whether audio cards with lower cost Paper.

Claims (8)

1. a paper reading device, it is the paper reading device reading image information from paper, and described paper reads dress Put and be characterised by, including:
Ultrasound transmitter device, it is located at the vicinity of carrying path of paper；
Ultrasonic receiver, it clips described carrying path and is relatively configured with described ultrasound transmitter device, and exports super Acoustic signals；
Wave filter portion, its composition separating the first frequency band from described ultrasonic signal and the composition of the second frequency band, described The composition of the first frequency band by being sent by described ultrasound transmitter device and being produced by the ultrasonic wave of paper, described second frequency band Composition is produced by conveying sound during paper sheet delivery, less than described first frequency band and be the zone of audibility；
Fold and send detection unit, its composition based on described first frequency band, it is determined that whether paper there occurs folded sending；
Sound paper jam determination unit, its composition based on described second frequency band, it is determined whether there occurs paperboard.
Paper reading device the most according to claim 1, it is characterised in that
The described zone of audibility is more than 20Hz and the frequency band less than 20kHz.
Paper reading device the most according to claim 1 and 2, it is characterised in that
Described wave filter portion has: the first wave filter, and it makes the composition of described first frequency band in described ultrasonic signal lead to Cross；Second wave filter, it makes the composition of described second frequency band in described ultrasonic signal pass through；Enlarging section, it amplifies The signal of any one output in described first wave filter and described second wave filter.
Paper reading device the most according to claim 3, it is characterised in that
Described ultrasound transmitter device sends described ultrasonic wave in the moment of regulation,
Also including: the first switching part, it is according to the moment of described regulation, the signal that switching is amplified by described enlarging section.
Paper reading device the most according to claim 1, it is characterised in that
Described wave filter portion, makes composition and the composition of described second frequency band of the first frequency band described in described ultrasonic signal In any one passes through.
Paper reading device the most according to claim 5, it is characterised in that
Described ultrasound transmitter device sends described ultrasonic wave in the moment of regulation,
Also including: the second switching part, it, according to the moment of described regulation, switches the frequency band that described wave filter portion allows to pass through Composition.
Paper reading device the most according to claim 1 and 2, it is characterised in that
Farther including: control portion, it judges based on the paperboard carried out by described sound paper jam determination unit, performs exception Process,
Described control portion is controlled as follows: even described sound paper jam determination unit judges to there occurs paperboard Situation, described folded send detection unit to judge to there occurs folded sending in the case of, be also regarded as paperboard and do not occur, do not perform Described abnormality processing.
8. a paperboard decision method, it is the paperboard decision method of the paper reading device reading image information from paper, Described paperboard decision method is characterised by, comprises:
Ultrasonic signal obtaining step, i.e. obtains composition and the composition of the second frequency band of the first frequency band, institute from wave filter portion State the composition of the first frequency band by being sent by ultrasound transmitter device and being produced by the ultrasonic wave of paper, the one-tenth of described second frequency band Point being produced by conveying sound during paper sheet delivery, less than described first frequency band and be the zone of audibility, described wave filter portion is from ultrasonic The ultrasonic signal of ripple receiver output separates composition and the composition of described second frequency band of described first frequency band, described Ultrasonic receiver clips the carrying path of paper with the described ultrasound transmitter device being located near described carrying path relatively It is configured, and exports described ultrasonic signal；
Fold and send determination step, i.e. based on described first frequency band composition, it is determined that whether paper there occurs folded sending；
Sound paperboard determination step, i.e. based on described second frequency band composition, it is determined whether there occurs paperboard.
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